<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    var arr1 = [{ label: '男', value: 1 }, { label: '女', value: 0 }]
    // 封装函数
    function f(arr) {
      // 声明空数组
      const arr2 = []
      // 遍历数组
      arr.forEach(item => {
        // 存入空数组
        arr2.push(Object.values(item)[0])
      })
      return arr2
    }
    // 接收返回结果
    var arr3 = f(arr1);
    console.log(arr3)
  </script>
</body>

</html>